Cisco Cisco IOS Software Release 12.2(16)B
SSG Prepaid Enhancements
Information About SSG Prepaid Enhancements
8
Cisco IOS Release 12.3(4)T
Service Reauthorization
During a connection, SSG decrements a volume-based quota until it runs out. If the quota is based on
time, the connection is allowed to proceed for the quota duration. When the quota reaches zero, SSG
issues a Service Reauthorization Request to the billing server. The Service Reauthorization Request
includes an SSG VSA called Quota Used. The Quota Used VSA has the same format as the Quota VSA
described in
time, the connection is allowed to proceed for the quota duration. When the quota reaches zero, SSG
issues a Service Reauthorization Request to the billing server. The Service Reauthorization Request
includes an SSG VSA called Quota Used. The Quota Used VSA has the same format as the Quota VSA
described in
. The content of the Service Reauthorization Request is listed in
If service reauthorization is unsuccessful, the billing server will respond to the Service Reauthorization
Request with an Access-Accept packet containing a quota of zero. SSG will terminate the connection to
the service at this point. If service reauthorization is successful, the billing server will return another
quota to SSG, and the connection will be allowed to continue.
Request with an Access-Accept packet containing a quota of zero. SSG will terminate the connection to
the service at this point. If service reauthorization is successful, the billing server will return another
quota to SSG, and the connection will be allowed to continue.
Simultaneous Volume- and Time-Based Prepaid Billing
The simultaneous volume- and time-based prepaid billing feature allows the SSG to provide volume- and
time-based prepaid billing on the same service.
time-based prepaid billing on the same service.
Typically this feature is used in a prepaid environment such as a Public Wireless LAN (PWLAN) in an
airport lounge or coffee shop.
airport lounge or coffee shop.
With simultaneous volume- and time-based prepaid billing, the service provider can bill the subscriber
based on volume and time used, and hence be able to charge for any use of the same service. Before this
feature was available, a subscriber on a single volume-based service could have a connection open for
any length of time without incurring any charge.
based on volume and time used, and hence be able to charge for any use of the same service. Before this
feature was available, a subscriber on a single volume-based service could have a connection open for
any length of time without incurring any charge.
The prepaid billing server can now allocate quotas in both time and volume, and SSG is able to monitor
the connection on both types. The SSG performs a reauthorization whenever either of these quota types
is exhausted.
the connection on both types. The SSG performs a reauthorization whenever either of these quota types
is exhausted.
Table 10
Contents of Service Reauthorization Request
Attribute ID Attribute Name
Description
Notes
1
User-Name
MS subscriber name
—
2
PAP Password
Global service profile password
—
4
NAS IP Address
SSG IP address
—
6
Service-Type
Framed-user
—
26
Vendor-Specific
Name of service
Subattribute ID 251; code N.
26
Vendor-Specific
Quota
Subattribute ID 253.
The Quota Used VSA has the
same format as the Quota
VSA.
same format as the Quota
VSA.
31
Calling-Station-ID
MSISDN
—
55
Time-Stamp
Time-stamp
—
44
Acct-Session-ID
Session ID
—
61
NAS-Port-Type
Async (value=0)
—